On 04/12/2011 11:33 AM, Alan Brown wrote: > Digimer wrote: >> >> As soon as I define MTU=2000 (for example), then cman on one note will >> start but not stop (the other node stops fine). Also, 'ccs_tool update >> /etc/cluster/cluster.conf' fails with: > > Have you configured the interfaces themselves to use jumbo frames? > > Does the switch support jumbo frames? > > Is path mtu discovery enabled? (should only matter if there's a router > in the way) The nodes are connected via a common switch, which supports large jumbo frames (10k) and jumbo frames are enabled. Each node's NIC is set to the same MTU=x number. No routers involved, and the NICs themselves also support 9kb JFs. -- Digimer E-Mail: digimer@xxxxxxxxxxx AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster